non_contact Oxide BreastCancerCell Vac Holes ForceDistanceSpectroscopy Tungsten_disulfide biocompatible Tape C36H74 TipBiasMode Blood MfmPhase LiquidImaging fifber single_layer DomainSwitching StyreneBeads SmalScan Pinpoint Force-distance Butterfly Protein CVD Chungnam_National_University TiO2 Ptfe StainlessSteel LateralPFM Ca10(PO4)6(OH)2 CuFoil Pinpoint PFM NiFe Tin sulfide thermal_conductivity